Somatic damage to the X chromosome of the nematode Caenorhabditis elegans induced by gamma radiation

摘要: Wild-type male embryos and young larvae of the nematode Caenorhabditis elegans were more sensitive than wild-type hermaphrodites to inactivation by gamma rays; males have one X chromosome per cell (XO), whereas two (XX). Furthermore, after transformation into fertile a her-1 mutation, XO animals radiosensitive XX animals; transformed tra-1 mutation did not show increased radiosensitivity. It is concluded that are because they rather two, predominant mode involves damage single chromosome. No sex-specific differences in survival observed UV irradiation.